EP2741955A1 - Stable offshore floating depot - Google Patents
Stable offshore floating depotInfo
- Publication number
- EP2741955A1 EP2741955A1 EP12822127.2A EP12822127A EP2741955A1 EP 2741955 A1 EP2741955 A1 EP 2741955A1 EP 12822127 A EP12822127 A EP 12822127A EP 2741955 A1 EP2741955 A1 EP 2741955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tunnel
- hull
- offshore
- exterior
- superstructure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007667 floating Methods 0.000 title description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims 2
- 230000005484 gravity Effects 0.000 abstract description 11
- 238000013016 damping Methods 0.000 abstract description 10
- 230000004044 response Effects 0.000 abstract description 6
- 238000003032 molecular docking Methods 0.000 abstract description 5
- 230000004308 accommodation Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 16
- 238000013461 design Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000011295 pitch Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 210000002435 tendon Anatomy 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 240000000662 Anethum graveolens Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- -1 JP-5 for helicopters Substances 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- VIQCGTZFEYDQMR-UHFFFAOYSA-N fluphenazine decanoate Chemical compound C1CN(CCOC(=O)CCCCCCCCC)CCN1CCCN1C2=CC(C(F)(F)F)=CC=C2SC2=CC=CC=C21 VIQCGTZFEYDQMR-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
- B63B1/041—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with disk-shaped hull
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B2003/147—Moon-pools, e.g. for offshore drilling vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B2021/003—Mooring or anchoring equipment, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4473—Floating structures supporting industrial plants, such as factories, refineries, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
- B63B2039/067—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water effecting motion dampening by means of fixed or movable resistance bodies, e.g. by bilge keels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2231/00—Material used for some parts or elements, or for particular purposes
- B63B2231/02—Metallic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2241/00—Design characteristics
- B63B2241/02—Design characterised by particular shapes
- B63B2241/04—Design characterised by particular shapes by particular cross sections
- B63B2241/06—Design characterised by particular shapes by particular cross sections circular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G11/00—Aircraft carriers
Definitions
- This present invention pertains generally to offshore buoyant vessels, platforms, caissons, buoys, spars, or other structures used for supporting offshore oil and gas operations.
- the present invention relates to a stable moored offshore terminal, such as would be used for safe handling, staging, and transportation of personnel, supplies, boats, and helicopters.
- Stable buoyant structures for supporting offshore oil and gas operations are known in the art.
- Offshore production structures which may be vessels, platforms, caissons, buoys, or spars, for example, each typically include a buoyant hull that supports a superstructure.
- the hull includes internal compartmentalization for ballasting and storage, and the superstructure provides drilling and production equipment, helipads, crew living quarters, and the like.
- a floating structure is subject to environmental forces of wind, waves, ice, tides, and current. These environmental forces result in accelerations, displacements and oscillatory motions of the structure.
- the response of a floating structure to such environmental forces is affected not only by its hull design and superstructure, but also by its mooring system and any appendages.
- a floating structure has several design requirements: Adequate reserve buoyancy to safely support the weight of the superstructure and payload, stability under all conditions, and good seakeeping characteristics. With respect to the good seakeeping requirement, the ability to reduce vertical heave is very desirable. Heave motions can create tension variations in mooring systems, which can cause fatigue and failure. Large heave motions increase danger in launching and recovery of small boats and helicopters and loading and offloading stores and personnel.
- the seakeeping characteristics of a buoyant structure are influenced by a number of factors, including the waterplane area, the hull profile, and the natural period of motion of the floating structure. It is very desirable that the natural period of the floating structure be either significantly greater than or significantly less than the wave periods of the sea in which the structure is located, so as to decouple substantially the motion of the structure from the wave motion.
- Vessel design involves balancing competing factors to arrive at an optimal solution for a given set of factors. Cost, constructability, survivability, utility, and installation concerns are among many considerations in vessel design. Design parameters of the floating structure include the draft, the waterplane area, the draft rate of change, the location of the center of gravity (“CG”), the location of the center of buoyancy (“CB”), the metacentric height (“GM”), the sail area, and the total mass.
- the total mass includes added mass— i.e., the mass of the water around the hull of the floating structure that is forced to move as the floating structure moves. Appendages connected to the structure hull for increasing added mass are a cost effective way to fine tune structure response and performance characteristics when subjected to the environmental forces.
- a structure that is symmetric about a vertical axis is generally less subject to yaw forces.
- wave-induced lateral surge forces also increase.
- a floating structure may be modeled as a spring with a natural period of motion in the heave and surge directions. The natural period of motion in a particular direction is inversely proportional to the stiffness of the structure in that direction. As the total mass (including added mass) of the staicture increases, the natural periods of motion of the structure become longer.
- tension leg platforms are advantageous, because they have the added benefit of being substantially heave restrained.
- tension leg platforms are costly structures and, accordingly, are not feasible for use in all situations.
- Self-stability i.e., stability not dependent on the mooring system
- Self-stability may be achieved by creating a large waterplane area.
- the center of buoyancy of the submerged hull shifts to provide a righting moment.
- the center of gravity may be above the center of buoyancy, the structure can nevertheless remain stable under relatively large angles of heel.
- the heave seakeeping characteristics of a large waterplane area in the wave zone are generally undesirable.
- Inherent self-stability is provided when the center of gravity is located below the center of buoyancy.
- the combined weight of the superstructure, hull, payload, ballast and other elements may be arranged to lower the center of gravity, but such an arrangement may be difficult to achieve.
- One method to lower the center of gravity is the addition of fixed ballast below the center of buoyancy to counterbalance the weight of superstructure and payload.
- Structural fixed ballast such as pig iron, iron ore, and concrete, are placed within or attached to the hull structure. The advantage of such a ballast arrangement is that stability may be achieved without adverse effect on seakeeping performance due to a large waterplane area.
- Self-stable structures have the advantage of stability independent of the function of mooring system. Although the heave seakeeping characteristics of self-stabilizing floating structures are generally inferior to those of tendon-based platforms, self- stabilizing structures may nonetheless be preferable in many situations due to higher costs of tendon-based structures.
- the Smedal structure has a CG located above the CB and therefore relies on a large waterplane area for stability, with a concomitant diminished heave seakeeping characteristic.
- the Smedal structure has a circumferential recess formed about the hull near the keel for pitch and roll damping, the location and profile of such a recess has little effect in dampening heave.
- a primary object of the invention is to provide a buoyant offshore depot or terminal characterized by all of the following advantageous attributes: Symmetry of the hull about a vertical axis; the center of gravity located below the center of buoyancy for inherent stability without the requirement for complex retractable columns or the like, exceptional heave damping characteristics without the requirement for mooring with vertical tendons, and a design that provides for quayside integration of the superstructure and "right-side-up" transit to the installation site, including the capability to transit through shallow waters.
- Another object of the invention is to provide a buoyant offshore depot or terminal that may be strategically positioned nearby one or more offshore platforms to act as a safe shelter and distribution point for supply boats, helicopters, stores, and personnel.
- Another object of the invention is to provide a buoyant offshore depot or terminal with improved pitch, roll and heave resistance.
- Another object of the invention is to provide a buoyant offshore depot or terminal that allows fine tuning of the overall system response to meet specific operating requirements and regional environmental conditions.
- Another object of the invention is to provide a buoyant offshore depot or terminal that can be constructed without the need for a graving dock, thereby allowing construction in virtually any fabrication yard.
- Another object of the invention is to provide a buoyant offshore depot or terminal that is easily scalable.
- an offshore terminal or depot having a hull symmetric about a vertical axis with an upper vertical side wall extending downwardly from the main deck, an upper inwardly tapered side wall disposed below the upper vertical wall, a lower outwardly tapered side wall disposed below the upper sloped side wall, and a lower vertical side wall disposed below the lower sloped side wall.
- the hull planform may be circular, oval, elliptical, or polygonal, for example.
- the upper inward-tapering side wall preferably slopes at an angle with respect to the vessel vertical axis between 10 and 15 degrees.
- the lower outward tapering side wall preferably slopes at an angle with respect to the vessel vertical axis between 55 and 65 degrees.
- the upper and lower tapered side walls cooperate to produce a significant amount of radiation damping resulting in almost no heave amplification for any wave period.
- Optional fin-shaped appendages may be provided near the keel level for creating added mass to further reduce and fine tune the heave.
- the center of gravity of the offshore depot according to the invention is located below its center of buoyancy in order to provide inherent stability.
- the addition of ballast to the lower and outermost portions of the hull is used to lower the CG for various superstructure configurations and payloads to be carried by the hull.
- the ballasting creates large righting moments and increases the natural period of the structure to above the period of the most common waves, thereby limiting wave-induced acceleration in all degrees of freedom.
- the height h of the hull is preferably limited to a dimension that allows the structure to be assembled onshore or quayside using conventional shipbuilding methods and then towed upright to an offshore location.
- the offshore depot includes a tunnel formed within or through the hull at the waterline that provides a sheltered area inside the hull for safe and easy launching/docking of boats and embarkation/debarkation of personnel.
- the tunnel entrance(s) have watertight doors, which are fitted with robust rubber fenders.
- the interior of the tunnel may also include fenders to facilitate docking. When the watertight tunnel doors are all shut, the tunnel may be drained to create a dry dock environment within the hull.
- the tunnel may include single or multiple branches with multiple penetrations through the hull.
- the tunnel may include straight, curved, or tapering sections and intersections in a variety of elevations and configurations.
- the offshore depot is ideally moored so that one or more tunnel entrances are leeward of prevailing winds, waves and currents.
- disposed within the tunnel is a boatlift assembly. Boatlift assembly is used to raise transport boats so as to eliminate any heave and roll with respect to the offshore depot, thereby establishing a safe condition in which to embark and debark passengers.
- high pressure air and/or water nozzles may be disposed at various points in the tunnel below the waterline in order to air raid the water column, thereby influencing the wave and the localized swell action within the tunnel.
- the offshore depot includes a superstructure that ideally includes berthing and dinning accommodations, medical facilities, workshops, machine shops, a heliport, and the like.
- the super structure may also include one or more cranes, davits or the like as appropriate for the services to be provided.
- Figure 1 is a perspective view of a buoyant offshore depot moored to the seabed according to a preferred embodiment of the invention, shown with a superstructure carried by the hull to support offshore operations and with a tunnel formed through the hull for safely receiving small personnel transfer boats and the like;
- Figure 2 is an axial cross -sectional drawing of the hull profile of the buoyant offshore depot according to a preferred embodiment of the invention, showing an upper vertical wall portion, an upper inwardly tapered wall section, a lower outwardly tapered wall section, and a lower vertical wall section;
- Figure 3 is an enlarged perspective view of the offshore depot of Figure 1 , showing detail of the tunnel, tunnel doors, and a small personnel transfer boat moored therein;
- Figure 4 is a perspective view of a boatlift assembly of the offshore depot of
- Figure 1 that is, according to a preferred embodiment, disposed within the tunnel
- Figure 5 is a horizontal cross section taken through the hull of the offshore depot of Figure 1, showing a straight tunnel formed completely therethrough;
- Figure 6 is a horizontal cross section taken through the hull of an offshore depot according a another embodiment of the invention, showing a cruciform tunnel having entrances formed through the hull at ninety degree intervals;
- Figure 7 is an elevation side view in partial cross section of the hull of the offshore depot of Figure 1, showing optional baffles for reducing waves within the tunnel;
- Figure 8 is an elevation side view in partial cross section of the hull of an offshore depot according to an alternate embodiment of the invention, showing a moon pool opening between the tunnel and the keel and optional baffles for reducing waves within the tunnel. DESCRIPTION OF THE PREFERRED
- FIG. 1 illustrates a buoyant offshore depot 10 for operationally supporting offshore exploration, drilling, production, and storage installations according to a preferred embodiment of the invention.
- Offshore depot 10 includes a buoyant hull 12, which may carry a superstructure 13 thereon.
- Superstructure 13 may include a diverse collection of equipment and structures, such as living quarters for a crew, equipment storage, a heliport, and a myriad of other structures, systems, and equipment, depending on the type of offshore operations to be supported.
- Hull 12 is preferably moored to the seafloor by a number of catenary mooring lines 16.
- FIG. 2 is a simplified view of the vertical profile of hull 12 according to a preferred embodiment of the invention.
- hull 12 of offshore depot 10 has a circular main deck 12a, an upper cylindrical side section 12b extending downwardly from deck 12a, an inwardly- tapering upper frustoconical side section 12c located below upper cylindrical portion 12b, a lower frustoconical side section 12d extending downwardly and flaring outwardly from upper frustoconical side section 12c, a lower cylindrical side section 12e extending downwardly from lower frustoconical section 12d, and a flat circular keel 12f.
- upper frustoconical side section 12c has a substantially greater vertical height than lower frustoconical section 12d
- upper cylindrical section 12b has a slightly greater vertical height than lower cylindrical section 12e.
- upper cylindrical section 12b may optionally be connected to upper frustoconical transition section 12g so as to provide for a main deck of greater radius and a concomitant larger superstructure 13.
- Transition section 12g is ideally located above the waterline.
- Circular main deck 12a, upper cylindrical side section 12b, transition section 12g, upper frustoconical side section 12c, lower frustoconical side section 12d, lower cylindrical section 12e, and circular keel 12f are all co-axial with a common vertical axis 100 ( Figure 2). Accordingly, hull 12 is characterized by a circular cross section when taken perpendicular to the axis 100 at any elevation.
- hull 12 Due to its circular planform, the dynamic response of hull 12 is independent of wave direction (when neglecting any asymmetries in the mooring system, risers, and underwater appendages), thereby minimizing wave-induced yaw forces. Additionally, the conical form of hull 12 is structurally efficient, offering a high payload and storage volume per ton of steel when compared to traditional ship-shaped offshore structures.
- Hull 12 preferably has round walls which are circular in radial cross- section, but such shape may be approximated using a large number of flat metal plates rather than bending plates into a desired curvature. Although a circular hull planform is preferred, polygonal hull planforms may be used according to alternative embodiments.
- hull 12 may have an oval or elliptical planform.
- An elliptical shape may be advantageous when depot 10 is moored closely adjacent to another offshore platform so as to allow gangway passage between the two structures.
- An elliptical hull 12 may minimize or eliminate wave interference from the "battered" shaped platform legs.
- upper and lower sloped hull walls 12c, 12d generates a significant amount of radiation damping resulting in almost no heave amplification for any wave period, as described below.
- Inward tapering wall section 12c is located in the wave zone.
- the waterline is located on upper frustoconical section 12c just below the intersection with upper cylindrical side section 12b.
- Upper inward-tapering section 12c preferably slopes at an angle a with respect to the vessel vertical axis 100 between 10 and 15 degrees.
- the inward flare before reaching the waterline significantly dampens downward heave, because a downward motion of hull 12 increases the waterplane area.
- the hull area normal to the vertical axis 100 that breaks the water's surface will increase with downward hull motion, and such increased area is subject to the opposing resistance of the air/water interface. It has been found that 10- 15 degrees of flare provides a desirable amount of damping of downward heave without sacrificing too much storage volume for the vessel.
- lower tapering surface 12d dampens upward heave.
- the lower sloping wall section 12d is located below the wave zone (about 30 meters below the waterline). Because the entire lower outward- sloping wall surface 12d is below the water surface, a greater area (normal to the vertical axis 100) is desired to achieve upward damping. Accordingly, the diameter Dj of the lower hull section is preferably greater than the major diameter of the upper frustoconical section 12c.
- the lower outward-sloping wall section 12d preferably slopes at an angle ⁇ with respect to the vessel vertical axis 100 between 55 and 65 degrees.
- the lower section flares outwardly at an angle greater than or equal to 55 degrees to provide greater inertia for heave roll and pitch motions.
- the increased mass contributes to natural periods for heave pitch and roll above the expected wave energy.
- the upper bound of 65 degrees is based on avoiding abrupt changes in stability during initial ballasting on installation. That is, wall surface 12d could be perpendicular to the vertical axis 100 and achieve a desired amount of upward heave damping, but such a hull profile would result in an undesirable step-change in stability during initial ballasting on installation.
- the center of gravity of the offshore vessel 10 is located below its center of buoyancy to provide inherent stability.
- the addition of ballast to hull 12 is used to lower the CG. Ideally, enough ballast is added to lower the CG below the CB for whatever configuration of superstructure 13 ( Figure 1) and payload is to be carried by hull 12.
- the hull form of depot 10 is characterized by a relatively high metacenter. But, because the CG is low, the metacentric height is further enhanced, resulting in large righting moments. Additionally, the peripheral location of the fixed ballast further increases the righting moments. Accordingly, offshore depot 10 aggressively resists roll and pitch and is said to be "stiff." Stiff vessels are typically characterized by abrupt jerky accelerations as the large righting moments counter pitch and roll. However, the inertia associated with the high total mass of depot 10, enhanced specifically by the fixed ballast, mitigates such accelerations. In particular, the mass of the fixed ballast increases the natural period of the depot 10 to above the period of the most common waves, thereby limiting wave- induced acceleration in all degrees of freedom.
- FIGS 1 , 2, 5, and 6 show optional fin-shaped appendages 84 that may be used for creating added mass and for reducing heave and otherwise steadying offshore depot 10.
- the one or more fins 84 are attached to a lower and outer portion of lower cylindrical side section 12e of hull 12.
- fins 84 comprise four fin sections separated from each other by gaps 86. Gaps 86 accommodate anchor lines 16 on the exterior of hull 12 without contact with fins 84.
- fin 84 for reducing heave is shown in cross-section.
- fin 84 has the shape of a right triangle in a vertical cross-section, where the right angle is located adjacent a lowermost outer side wall of lower cylindrical section 12e of hull 12, such that a bottom edge 84e of the triangle shape is co-planar with the keel surface 12f, and the hypotenuse 84f of the triangle shape extends from a distal end of the bottom edge 84e of the triangle shape upwards and inwards to attach to the outer side wall of lower cylindrical section 12e.
- bottom edge 84e may extend radially outward a distance that is about half the vertical height of lower cylindrical section 12e, with hypotenuse 84f attaching to lower cylindrical section 12e about one quarter up the vertical height of lower cylindrical section 12e from keel level.
- bottom edge 84e of fin 84 may extend radially outwardly an additional distance r, where 0.05/? > r > 0.20 ?, preferably about 0.10/? > r > 0.15/?, and more preferably r3 ⁇ 4 0.125 ?.
- fins 84 of a particular configuration defining a given radial coverage are shown in Figures 5 and 6, a different number of fins defining more or less radial coverage may be used to vary the amount of added mass as required. Added mass may or may not be desirable depending upon the requirements of a particular floating structure. Added mass, however, is generally the least expensive method of increasing the mass of a floating structure for purposes of influencing the natural period of motion.
- offshore depot 10 includes a tunnel 30 formed within or through hull 12 at the waterline.
- Tunnel 30 provides a sheltered area inside hull 12 for safe and easy launching/docking of boats and embarkation/debarkation of personnel.
- Lower tapering surface 12d provides a "beach effect" that absorbs most of the surface wave energy at the tunnel entrance(s), thereby reducing slamming and harmonic effects on boats when traversing or moored within tunnel 30.
- Tunnel 30 may optionally be part of or include a moon pool 150 (Figure 8) that opens through keel 12f.
- a moon pool if provided, may be open to the sea below, using grating 152 to prevent objects from falling therethrough, for example, or it may be closeable by a watertight hatch (not illustrated), if desired.
- An open moon pool 150 may provide slightly better overall motion response.
- Tunnel 30 has, at every entrance, watertight or weathertight doors 34 that can be opened and closed as required. Doors 34 also function as guiding and stabbing systems, because doors 34 are fitted with robust rubber fenders 36 to reduce potential damage to hull 12 and a small boat 200 should impact occur.
- the interior of tunnel 30 may also include fenders 38 to facilitate docking.
- watertight doors 34 When watertight doors 34 are all shut, tunnel may be drained, using for example, a gravity based draining system or high capacity pumps, so as to create a dry dock environment within hull 12.
- Weathertight doors which may include openings below the waterline, may be used in place of watertight doors to allow controlled circulation of water between tunnel 30 and the exterior. Doors 34 may be hinged, or may slide vertically or horizontally as is known in the art.
- Tunnel 30 may include single or multiple branches with multiple penetrations through hull 12.
- Tunnel 30 may include straight, curved, or tapering sections and intersections in a variety of elevations and configurations.
- Figure 5 illustrates a straight tunnel 30 that passes completely through hull 12 on a diameter.
- Figure 6 illustrates a cruciform tunnel 30 that provides four entrances disposed at ninety- degree intervals about hull 12.
- Offshore depot 10 is ideally moored so that one or more tunnel entrances are leeward of prevailing winds, waves and currents.
- Figures 7 and 8 illustrate optional thresholds 33 disposed near the entrances of tunnel 30, which reduce wave energy entering tunnel 30.
- One or more interior baffles 37 may be included on the tunnel floor 35 to further reduce the propensity for sloshing within tunnel 30.
- a boatlift assembly 40 disposed within tunnel 30 is a boatlift assembly 40.
- Boatlift assembly 40 may include a rigid frame 42 carrying chocks 44 that are positioned and arranged for supporting boat 200.
- frame 42 is formed of I-beams in a rectangular shape of approximately 15 meters by 40 meters with a safe working load of 200 to 300 tons.
- FTU fast transport unit
- a drive assembly 46 which may include rack and pinion gearing, piston-cylinder arrangements, or a system of running rigging, for example, raises and lowers frame 42 with its payload.
- Boatlift assembly is preferably capable of lifting boat 200 1 to 2 meters or more so as to eliminate any heave and roll of boat 200 with respect to depot 10, thereby establishing a safe condition in which to embark and debark passengers.
- high pressure air and/or water nozzles 39 may be disposed at various points in tunnel 30 below water in order to air raid the water column, thereby influencing the wave and the localized swell action within tunnel 30.
- the offshore depot 10 can be ballasted to lower its position in the water to allow boat 200 to enter tunnel 30. Once boat 200 is positioned above appropriate chocks, offshore depot 10 can be deballasted, thereby raising depot 10 further out of the water, draining water from tunnel 30, and causing boat 200 to be seated in its chocks in a dry dock condition.
- a FTU or similar boat 200 will arrive in the proximity of moored, stable offshore depot 10.
- Boat 200 ideally approaches the entrance to tunnel 30 that is the most sheltered from the effects of wind, waves, and current. If not already in a flooded state, tunnel 30 is flooded.
- the corresponding doors 34 are opened, and boat 200 enters tunnel 30 under its own power.
- Door and tunnel fenders 36, 38, as well as the self- guiding stabbing dock shape of tunnel 30 itself, provides safe and reliable clearance guidance. Fenders 36, 38 also eliminate or drastically reduce riding and bouncing of boat 200 against the internal dock side of tunnel 30.
- one or both doors 34 may be shut to reduce wave, wind and swell effects from the outer environmental conditions.
- Boat 200 is aligned over boatlift assembly 40, optionally aided by the use of controlled and monitored underwater cameras and transporter systems. Boat 200 may then be lifted by boatlift assembly 40 as desired. The reverse procedure will be used to launch boat 200.
- Offshore depot 10 can be designed and sized to meet the requirements of a particular application.
- the dimensions may be scaled using the well known Froude scaling technique.
- the dimensions of tunnel 30, which can be scaled as appropriate, are approximately 17 meters wide by 21 meters high. Such dimensions are appropriate for the tri-hull FTUs described above.
- hull 12 includes storage compartments, which may by used for hydrocarbon products, diesel-fuel-marine for boats, jet propulsion fuel such as JP-5 for helicopters, and potable water, for example, and ballast compartments.
- the exterior of hull 12 may include one or more hard points upon which bitts, padeyes, tow pads 60, or similar connection devices are mounted that can be used to tow offshore depot 10 or moor other vessels.
- Superstructure 13 may include berthing and dinning accommodations 50, medical facilities, workshops, machine shops, and the like. One or more helo decks 52, a control tower 54, aircraft hangers 56, and a jet-blast wall 58, are preferably provided. Super structure 13 may also include one or more cranes 70, davits or the like as appropriate for the services to be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Earth Drilling (AREA)
- Revetment (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Bridges Or Land Bridges (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161521701P | 2011-08-09 | 2011-08-09 | |
PCT/US2012/024494 WO2013022484A1 (en) | 2011-08-09 | 2012-02-09 | Stable offshore floating depot |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2741955A1 true EP2741955A1 (en) | 2014-06-18 |
EP2741955A4 EP2741955A4 (en) | 2016-01-13 |
EP2741955B1 EP2741955B1 (en) | 2019-08-28 |
Family
ID=47668766
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12822127.2A Active EP2741955B1 (en) | 2011-08-09 | 2012-02-09 | Stable offshore floating depot |
EP18873773.8A Withdrawn EP3713825A4 (en) | 2011-08-09 | 2018-10-29 | Floating driller |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18873773.8A Withdrawn EP3713825A4 (en) | 2011-08-09 | 2018-10-29 | Floating driller |
Country Status (12)
Country | Link |
---|---|
US (2) | US8662000B2 (en) |
EP (2) | EP2741955B1 (en) |
KR (1) | KR102528209B1 (en) |
CN (2) | CN111601753A (en) |
AR (1) | AR113540A1 (en) |
AU (2) | AU2018361227A1 (en) |
BR (3) | BR102012004556B1 (en) |
CA (1) | CA3082802A1 (en) |
ES (1) | ES2747764T3 (en) |
RU (1) | RU2763006C1 (en) |
SG (1) | SG11202004609WA (en) |
WO (2) | WO2013022484A1 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8662000B2 (en) * | 2009-11-08 | 2014-03-04 | Ssp Technologies, Inc. | Stable offshore floating depot |
US9266587B1 (en) | 2009-11-08 | 2016-02-23 | Jurong Shipyard Pte Ltd. | Floating vessel |
US9180941B1 (en) | 2009-11-08 | 2015-11-10 | Jurong Shipyard Pte Ltd. | Method using a floatable offshore depot |
US8869727B1 (en) * | 2009-11-08 | 2014-10-28 | Ssp Technologies, Inc. | Buoyant structure |
US10093394B2 (en) | 2009-11-08 | 2018-10-09 | Jurong Shipyard Pte Ltd. | Method for offshore floating petroleum production, storage and offloading with a buoyant structure |
NO337762B1 (en) * | 2011-11-24 | 2016-06-20 | Sevan Marine Asa | Floating installation for temporary accommodation of objects and methods for transporting personnel and material between mainland and a floating installation. |
NO339535B1 (en) * | 2013-01-11 | 2016-12-27 | Moss Maritime As | Floating unit and method for reducing stomping and rolling movements of a floating unit |
ITAR20130018A1 (en) * | 2013-04-18 | 2014-10-19 | Raffaela Vasapollo | MOBILE PLATFORM WITH ELECTRIC-MECHANICAL OPERATION FOR HANGAR UNDERGROUND FOR HELICOPTERS WITH AUTOMATIC SYSTEM OF ELECTRO-MECHANICAL CLOSING OF THE COVERING PLANE |
ES2524491B2 (en) * | 2013-05-06 | 2015-06-17 | Universidad De Cantabria | Floating platform for open sea applications |
US9415843B1 (en) | 2013-08-30 | 2016-08-16 | Jurong Shipyard Pte Ltd. | Floating driller |
US20150093197A1 (en) * | 2013-10-01 | 2015-04-02 | Docker, Llc | Boat docking guide |
WO2015084758A1 (en) * | 2013-12-04 | 2015-06-11 | Shell Oil Company | Cassette barge receiving platform |
US9567044B2 (en) * | 2013-12-13 | 2017-02-14 | Jurong Shipyard Pte. Ltd. | Semisubmersible with tunnel structure |
SG11201605693TA (en) * | 2013-12-13 | 2016-09-29 | Ssp Technologies Inc | Buoyant structure |
MX2017005434A (en) * | 2014-10-27 | 2017-10-25 | Jurong Shipyard Pte Ltd | Buoyant structure. |
MY192128A (en) * | 2015-02-24 | 2022-07-29 | Jurong Shipyard Pte Ltd | Method using a floatable offshore depot |
AU2016223268B2 (en) * | 2015-02-24 | 2020-01-23 | Jurong Shipyard Pte Ltd. | Floating vessel |
GB2538275B (en) | 2015-05-13 | 2018-01-31 | Crondall Energy Consultants Ltd | Floating production unit and method of installing a floating production unit |
FR3054523B1 (en) * | 2016-07-26 | 2018-07-27 | Ifp Energies Now | FLOATING SUPPORT COMPRISING A FLOAT AND A DAMPING PLATE HAVING A ROW OF ORIFICES |
CN107161291A (en) * | 2017-05-03 | 2017-09-15 | 武汉理工大学 | A kind of stable head suitable for marine equipment |
US10450038B2 (en) | 2017-06-27 | 2019-10-22 | Jurong Shipyard Pte Ltd | Continuous vertical tubular handling and hoisting buoyant structure |
CN108995778A (en) * | 2018-08-17 | 2018-12-14 | 招商局重工(江苏)有限公司 | A kind of floating drilling platform being suitble in polar region ice formation and severe sea condition |
CN109250043A (en) * | 2018-08-17 | 2019-01-22 | 招商局重工(江苏)有限公司 | A kind of floating platform for the probing of polar region ice formation marine oil and gas |
US20230124771A1 (en) * | 2021-10-19 | 2023-04-20 | Tarkan Bastiyali | Air taxi pod terminals and methods |
Family Cites Families (87)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2156635A (en) * | 1935-01-17 | 1939-05-02 | Breeze Corp | Bulkhead door |
US2386650A (en) * | 1943-03-11 | 1945-10-09 | Leroy V Bell | Mother ship |
US3041639A (en) * | 1959-07-06 | 1962-07-03 | Gerald D Atlas | Multiple boat anchorage |
US3352118A (en) * | 1965-08-11 | 1967-11-14 | Exxon Production Research Co | Frictional drag reducer for immersed bodies |
US3581692A (en) * | 1969-01-31 | 1971-06-01 | Domenico Mortellito | Amphibious structure |
US3653354A (en) | 1970-03-02 | 1972-04-04 | Flume Stabilization Syst | Catamaran stabilizer |
US3763809A (en) | 1972-05-25 | 1973-10-09 | H Pazos | Semi-submersible work platform |
JPS4996474A (en) | 1973-01-23 | 1974-09-12 | ||
US3919958A (en) | 1974-06-13 | 1975-11-18 | Global Marine Inc | Deep ocean mining ship |
US4070979A (en) * | 1977-03-22 | 1978-01-31 | Otis Roger W | Floating dry storage facility for small boats |
US4281615A (en) | 1977-10-31 | 1981-08-04 | Sedco, Inc. | Self-propelled semi-submersible service vessel |
US4282822A (en) * | 1978-03-06 | 1981-08-11 | Robert Jackson | Boat hull anti-fouling shroud |
US4174671A (en) | 1978-05-18 | 1979-11-20 | Pacific Marine & Supply Co., Ltd. | Semisubmerged ship |
US4406243A (en) | 1980-01-16 | 1983-09-27 | Chul Ho Kim | Waterborne structure |
US4446808A (en) | 1980-01-29 | 1984-05-08 | Ateliers Et Chantiers De Bretagne A.C.B. | Barge-tug connection apparatus |
US4565149A (en) | 1982-03-11 | 1986-01-21 | Richard Clasky | Semi-submergible spherical residential structure |
US4502551A (en) | 1982-04-01 | 1985-03-05 | Rule Kenneth C | Deep draft drilling platform |
US4549835A (en) | 1983-11-23 | 1985-10-29 | Hitachi Zosen Corporation | Docking apparatus for ships |
GB8412540D0 (en) | 1984-05-17 | 1984-06-20 | Worley Eng Ltd | Multi-hulled vessels |
US4606673A (en) | 1984-12-11 | 1986-08-19 | Fluor Corporation | Spar buoy construction having production and oil storage facilities and method of operation |
US4640214A (en) * | 1985-01-18 | 1987-02-03 | Bruns John H | Modular multi-storage building |
SE447141B (en) | 1985-04-24 | 1986-10-27 | Hans Georgii | OFFSHORE ANLEGGNING |
DE3517863A1 (en) | 1985-05-17 | 1986-11-20 | Blohm + Voss Ag, 2000 Hamburg | MULTIPLE HULL WATER VEHICLE |
WO1986007326A1 (en) | 1985-06-03 | 1986-12-18 | Brian Watt Associates, Inc. | Offshore mooring/loading system |
US4679517A (en) | 1986-03-27 | 1987-07-14 | The B. F. Goodrich Company | Fender protective structures |
US4660677A (en) * | 1986-07-28 | 1987-04-28 | Conoco Inc. | Personnel evacuation apparatus for an offshore platform |
BR8606370A (en) | 1986-12-22 | 1988-07-12 | Petroleo Brasileiro Sa | CLOSED OCEANIC SUPPORT FLOATING STRUCTURE |
US4786210A (en) * | 1987-09-14 | 1988-11-22 | Mobil Oil Corporation | Arctic production/terminal facility |
US4837989A (en) | 1988-04-15 | 1989-06-13 | Levy Jacques S | Combined above and below grade dwelling with marine habitat |
GB8908097D0 (en) | 1989-04-11 | 1989-05-24 | Hampton James E | Mooring system |
US5316509A (en) * | 1991-09-27 | 1994-05-31 | Sofec, Inc. | Disconnectable mooring system |
US5265549A (en) | 1992-02-03 | 1993-11-30 | Cernier Edward J | Hydro-propelled ship |
US5573353A (en) * | 1994-05-24 | 1996-11-12 | J. Ray Mcdermott, S.A. | Vertical reel pipe laying vessel |
US5702206A (en) | 1996-03-14 | 1997-12-30 | Ope, Inc. | Offshore support structure method and apparatus |
FR2748717B1 (en) | 1996-05-14 | 1998-08-07 | Anthinea Limited | FLOATING SELF-CONTAINED HOUSING MODULE |
US5941192A (en) * | 1996-08-06 | 1999-08-24 | John H. Tavone | Ship borne lifts for tenders and methods for using same |
US6340273B1 (en) | 1997-11-07 | 2002-01-22 | Ope, Inc. | Support structure for wells, production facilities, and drilling rigs |
US6431107B1 (en) | 1998-04-17 | 2002-08-13 | Novellant Technologies, L.L.C. | Tendon-based floating structure |
US6073573A (en) | 1998-09-24 | 2000-06-13 | Gruber; Matthew | Floating multi-unit dwelling |
NL1010884C2 (en) | 1998-12-23 | 2000-06-26 | Hans Van Der Poel | Work ship. |
US6340272B1 (en) | 1999-01-07 | 2002-01-22 | Exxonmobil Upstream Research Co. | Method for constructing an offshore platform |
US6739804B1 (en) | 1999-04-21 | 2004-05-25 | Ope, Inc. | SCR top connector |
US6761508B1 (en) | 1999-04-21 | 2004-07-13 | Ope, Inc. | Satellite separator platform(SSP) |
US6371697B2 (en) | 1999-04-30 | 2002-04-16 | Abb Lummus Global, Inc. | Floating vessel for deep water drilling and production |
FR2800349B1 (en) * | 1999-10-27 | 2002-01-18 | Bouygues Offshore | LIQUEFIED GAS STORAGE BARGE WITH FLOATING CONCRETE STRUCTURE |
US20020038623A1 (en) * | 2000-09-28 | 2002-04-04 | Irish John T. | Garage and swimming area for yachts, trawlers and the like |
US6782950B2 (en) | 2000-09-29 | 2004-08-31 | Kellogg Brown & Root, Inc. | Control wellhead buoy |
ES2231576T3 (en) * | 2000-11-13 | 2005-05-16 | Single Buoy Moorings Inc. | BOAT THAT INCLUDES TRANSVERSAL SKIRTS. |
US6561290B2 (en) | 2001-01-12 | 2003-05-13 | Performance Boring Technologies, Inc. | Downhole mud motor |
US6401647B1 (en) * | 2001-01-12 | 2002-06-11 | Lorenzo E. Boston | Floatation building structure |
NO319971B1 (en) | 2001-05-10 | 2005-10-03 | Sevan Marine As | Offshore platform for drilling for or producing hydrocarbons |
US20040258484A1 (en) | 2001-10-22 | 2004-12-23 | Ope Technology, Llc | Floating platform with storage tanks for compressed gas and/or hydrate forms of hydrocarbons |
US20040240946A1 (en) | 2001-10-22 | 2004-12-02 | Ope Technology, Llc | Floating platform with separators and storage tanks for LNG and liquid gas forms of hydrocarbons |
WO2004043546A2 (en) | 2002-11-12 | 2004-05-27 | Lockheed Martin Corporation | Variable-draft vessel |
US6976443B2 (en) | 2002-12-20 | 2005-12-20 | Narve Oma | Crude oil transportation system |
US6942427B1 (en) | 2003-05-03 | 2005-09-13 | Nagan Srinivasan | Column-stabilized floating structure with telescopic keel tank for offshore applications and method of installation |
US7143710B2 (en) * | 2003-12-11 | 2006-12-05 | Lang Thomas G | Low drag ship hull |
US20050212285A1 (en) | 2004-03-29 | 2005-09-29 | Ope International, L.P. | Dual-walled piping system and methods |
SE527745C2 (en) | 2004-04-02 | 2006-05-30 | Gva Consultants Ab | A semi-submersible offshore vessel and methods for positioning work modules on said vessels |
US7278801B2 (en) | 2004-05-28 | 2007-10-09 | Deepwater Marine Technology L.L.C. | Method for deploying floating platform |
US7431622B2 (en) | 2004-06-10 | 2008-10-07 | Haun Richard D | Floating berth system and method |
US7070468B2 (en) | 2004-07-01 | 2006-07-04 | Lockheed Martin Corporation | Multi-hull watercraft with amidships-mounted propellers |
US7086810B2 (en) | 2004-09-02 | 2006-08-08 | Petróleo Brasileiro S.A. - Petrobras | Floating structure |
FR2886956B1 (en) * | 2005-06-10 | 2008-12-19 | Vab Sarl | RETRACTABLE BUILDING |
CA2518146C (en) | 2005-09-02 | 2012-05-01 | Nicu Cioceanu | Bearing assembly for downhole mud motor |
US7654211B2 (en) | 2005-12-07 | 2010-02-02 | Textron Inc. | Marine vessel transfer system |
US7509919B2 (en) | 2006-02-17 | 2009-03-31 | Single Buoy Moorings, Inc. | Deep water installation vessel |
US8858149B2 (en) * | 2006-06-01 | 2014-10-14 | David Murray Munson, Jr. | Remote docking port |
EP1873051A1 (en) * | 2006-06-30 | 2008-01-02 | Technische Universiteit Delft | Ship |
US7958835B2 (en) | 2007-01-01 | 2011-06-14 | Nagan Srinivasan | Offshore floating production, storage, and off-loading vessel for use in ice-covered and clear water applications |
NO336984B1 (en) | 2008-05-09 | 2015-12-07 | Sevan Marine As | Liquid platform and method of operation thereof |
CN102149598A (en) | 2008-09-11 | 2011-08-10 | 塞万海洋股份有限公司 | Floating unit for storage of gas |
US8007204B2 (en) | 2008-10-03 | 2011-08-30 | The Seasteading Institute | Floating structure for support of mixed use facilities |
US8662000B2 (en) | 2009-11-08 | 2014-03-04 | Ssp Technologies, Inc. | Stable offshore floating depot |
US9180941B1 (en) * | 2009-11-08 | 2015-11-10 | Jurong Shipyard Pte Ltd. | Method using a floatable offshore depot |
DK2496469T3 (en) * | 2009-11-08 | 2018-10-22 | Jurong Shipyard Pte Ltd | Liquid offshore structure for drilling, manufacturing, storage and unloading |
RU2591780C2 (en) | 2010-07-08 | 2016-07-20 | Итрек Б.В. | Semisubmersible floating base and operation method thereof |
NO336206B1 (en) | 2011-02-01 | 2015-06-15 | Sevan Marine Asa | Production unit with butchered hanging riser and with custom hull and moonpool |
NO337762B1 (en) | 2011-11-24 | 2016-06-20 | Sevan Marine Asa | Floating installation for temporary accommodation of objects and methods for transporting personnel and material between mainland and a floating installation. |
US20130133563A1 (en) | 2011-11-26 | 2013-05-30 | Stephan Vincent Kroecker | Mono Semi-Submersible Platform |
WO2014059785A1 (en) | 2012-10-15 | 2014-04-24 | 大连理工大学 | Butt joint octagonal frustum type floating production storage and offloading system |
US9802683B2 (en) | 2012-10-15 | 2017-10-31 | Dalian University Of Technology | Sandglass type ocean engineering floating structure |
US9834287B2 (en) | 2014-03-20 | 2017-12-05 | Dalian University Of Technology | Floating platform and method of floating state keeping and stability control during loading and unloading process |
US9315241B2 (en) * | 2014-05-02 | 2016-04-19 | Seahorse Equipment Corp | Buoyant turret mooring with porous receptor cage |
MX2017005434A (en) * | 2014-10-27 | 2017-10-25 | Jurong Shipyard Pte Ltd | Buoyant structure. |
MY192128A (en) * | 2015-02-24 | 2022-07-29 | Jurong Shipyard Pte Ltd | Method using a floatable offshore depot |
AU2016223268B2 (en) * | 2015-02-24 | 2020-01-23 | Jurong Shipyard Pte Ltd. | Floating vessel |
-
2012
- 2012-02-09 US US13/369,600 patent/US8662000B2/en active Active
- 2012-02-09 EP EP12822127.2A patent/EP2741955B1/en active Active
- 2012-02-09 WO PCT/US2012/024494 patent/WO2013022484A1/en active Application Filing
- 2012-02-09 ES ES12822127T patent/ES2747764T3/en active Active
- 2012-02-29 BR BR102012004556-7A patent/BR102012004556B1/en active IP Right Grant
-
2017
- 2017-11-22 US US15/821,158 patent/US9969466B2/en active Active
-
2018
- 2018-10-29 BR BR112020014476-2A patent/BR112020014476A2/en not_active Application Discontinuation
- 2018-10-29 AU AU2018361227A patent/AU2018361227A1/en not_active Abandoned
- 2018-10-29 CA CA3082802A patent/CA3082802A1/en active Pending
- 2018-10-29 CN CN201880086518.8A patent/CN111601753A/en active Pending
- 2018-10-29 RU RU2020120322A patent/RU2763006C1/en active
- 2018-10-29 EP EP18873773.8A patent/EP3713825A4/en not_active Withdrawn
- 2018-10-29 KR KR1020207014997A patent/KR102528209B1/en active IP Right Grant
- 2018-10-29 SG SG11202004609WA patent/SG11202004609WA/en unknown
- 2018-10-29 WO PCT/US2018/057934 patent/WO2019089420A1/en unknown
- 2018-11-19 BR BR112020010136-2A patent/BR112020010136A2/en not_active Application Discontinuation
- 2018-11-19 AU AU2018372844A patent/AU2018372844A1/en not_active Abandoned
- 2018-11-19 CN CN201880075805.9A patent/CN111372845A/en active Pending
- 2018-11-22 AR ARP180103425A patent/AR113540A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
RU2763006C1 (en) | 2021-12-24 |
US20180093744A1 (en) | 2018-04-05 |
WO2019089420A1 (en) | 2019-05-09 |
EP3713825A1 (en) | 2020-09-30 |
EP2741955A4 (en) | 2016-01-13 |
AU2018372844A1 (en) | 2020-06-04 |
CN111601753A (en) | 2020-08-28 |
US9969466B2 (en) | 2018-05-15 |
BR102012004556A8 (en) | 2016-12-13 |
BR112020014476A2 (en) | 2021-05-11 |
AR113540A1 (en) | 2020-05-13 |
EP2741955B1 (en) | 2019-08-28 |
KR20210082125A (en) | 2021-07-02 |
SG11202004609WA (en) | 2020-06-29 |
BR112020010136A2 (en) | 2020-11-10 |
CA3082802A1 (en) | 2019-05-09 |
BR102012004556A2 (en) | 2015-03-03 |
WO2013022484A1 (en) | 2013-02-14 |
KR102528209B1 (en) | 2023-05-02 |
US8662000B2 (en) | 2014-03-04 |
US20120132122A1 (en) | 2012-05-31 |
AU2018361227A1 (en) | 2020-06-04 |
ES2747764T3 (en) | 2020-03-11 |
CN111372845A (en) | 2020-07-03 |
EP3713825A4 (en) | 2021-07-21 |
BR102012004556B1 (en) | 2020-12-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8662000B2 (en) | Stable offshore floating depot | |
US8251003B2 (en) | Offshore buoyant drilling, production, storage and offloading structure | |
US9180941B1 (en) | Method using a floatable offshore depot | |
EP3261918B1 (en) | Method using a floatable offshore depot | |
US8387550B2 (en) | Offshore floating platform with motion damper columns | |
US10843776B2 (en) | Buoyant structure | |
US10300993B2 (en) | Buoyant structure with a plurality of tunnels and fins | |
US8869727B1 (en) | Buoyant structure | |
CN111356629A (en) | Buoyancy structure | |
CN202935548U (en) | Hourglass type ocean engineering floating structure | |
US20160031534A1 (en) | Buoyant structure | |
WO2013149312A1 (en) | Floating oceanic terminal, or soft terminal, with environmental conditions attenuating system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20140206 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VANDENWORM, NICOLAAS Owner name: JURONG SHIPYARD PTE. LTD. |
|
RA4 | Supplementary search report drawn up and despatched (corrected) |
Effective date: 20151210 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B63B 35/50 20060101AFI20151204BHEP Ipc: B63B 1/04 20060101ALI20151204BHEP Ipc: B63G 11/00 20060101ALI20151204BHEP Ipc: B63B 21/50 20060101ALI20151204BHEP Ipc: B63B 35/44 20060101ALI20151204BHEP |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: JURONG SHIPYARD PTE. LTD. |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20190322 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1172068 Country of ref document: AT Kind code of ref document: T Effective date: 20190915 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602012063440 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: T2 Effective date: 20190828 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191128 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191230 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191129 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191228 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2747764 Country of ref document: ES Kind code of ref document: T3 Effective date: 20200311 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1172068 Country of ref document: AT Kind code of ref document: T Effective date: 20190828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200224 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602012063440 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG2D | Information on lapse in contracting state deleted |
Ref country code: IS |
|
26N | No opposition filed |
Effective date: 20200603 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602012063440 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20200229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200209 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200229 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200901 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200209 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190828 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20240219 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20240224 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NO Payment date: 20240220 Year of fee payment: 13 Ref country code: IT Payment date: 20240219 Year of fee payment: 13 Ref country code: FR Payment date: 20240224 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20240429 Year of fee payment: 13 |